package com.tanhua.server.interceptor;

import com.tanhua.commons.utils.JwtUtils;
import com.tanhua.model.domain.User;
import io.jsonwebtoken.Claims;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * @author LaoLu
 * @Description:
 * @create 2022-08-17 14:28
 */
public class TokenInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //1. 获取请求头
        String token = request.getHeader("Authorization");
        // 因为加入了GateWay已经校验了token的有效性，所以不需要重复校验了
        //2. 使用工具类，判断token是否有效
//        boolean verifyToken = JwtUtils.verifyToken(token);
//        //3. 如果token失效，返回状态码401， 拦截
//        if (!verifyToken) {
//            response.setStatus(401);
//            return false;
//        }
        //4. 如果token正常可用，放行

        // 解析token，获取id和手机号码，构造user对象，存入Threadlocal
        Claims claims = JwtUtils.getClaims(token);
        String mobile = (String) claims.get("mobile");
        Integer id = (Integer) claims.get("id");

        User user = new User();
        user.setId(Long.valueOf(id));
        user.setMobile(mobile);

        UserHolder.set(user);

        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        UserHolder.remove();
    }
}
